Tube closure



M m, Wm W. SKMPSON W W TUBE CLOSURE Filed Jan. 28, 1935 aerator William Simpson, Mount N. c, i

oneto ll. Q. Bcnhow, Mount l Application .lanuary 2d,;lt35, Eerlal No. httl s invention relates to closures for collapsible tubes and its general object is to provide a cap that can he applied and removed with respect to the tube almost instantly yet when in applied position, casual displacement or removal is practically impossible, with the result the tedious operation in applying and removing the usual screw cap now generally employed is eliminated.

A further object of the invention is to provide a closure of the character set forth, that is simple in construction, inexpensive to manufacture and extremely emcient in operation and service.

a runner object of the invention is to provide a closure of the character set. forth, that is siml5 ple in construction, inexpensive to manufacture and extremely efficient in operation and service.

"this invention also consists in certain other features of construction and in the combination and arrangement of the several parts, tohe here-' inaiter fully described, illustrated in the accom panying drawing and. specifically pointed out in the appended claims. I v

in describing my invention in detail, reference will he had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a view illustrating my closure applied to a tube.

Figure 2 is a sectional view taken approximately on line 2-2 of Figure 1, looking in the direction Minot" the arrows. i

Figure 3 is a perspective view of the cap which forms a portion of my closure.

Figure 4 is a similar view illustrating the particular neck structure employed in my closure.

Referring to the drawing in detail, the letter A indicates the body of the tube which as shown is oi the usual construction, in that it includes a shoulder that has formed thereon a neck I which in forms a part of the present invention.

The neck is slightly tapered inwardly from adjacent its connection with the shoulder and has a plurality of exteriorly disposed circumferentially arranged grooves, each of which is provided with a horizontal portion 2 that merges-at one end into an upwardly inclined portion 3. The horizontal portions of the grooves are of the same depth throughout the length thereof, but the depth of the upwardly inclined portions decrease so until they merge into the outer surface-of the neck, as clearly shown in Figure t, in order that the grooves will simulate a. means in the form of segments of screwthreads, for a purpose which will he presently apparent. The opposite ends 55 of the horizontal portions are rounded and it will Ul. Wilt) he noted it the upper ends oi the lnced portions overlap the rounded ends.

The cap includes a dome-shape top t that has depending thereirorn inwardly oi the outer ice thereof a skirt t, the latter heing provided with 5 vertical slots 6 providing segments l, and it will he apparent that due to the slots 6, the seents possess a certain amount of resiliency.

The periphery of the top t is serrated to iilitate the application and removal oi the cap 10 with respect to the neck.

' The segments l have'extending inwar from the inner surface thereof for disposal dway the ends, teats or studs t, to he received in the grooves I in a manner which will be presently described. 15

Formed on and depending centrally from the top t is a projection t in the form of a stopper that is of a size to lit the loore of the neck as clearly shown in Figure 2, and the projection t is provided with a conical inner end which acts to guide the projection in the bore.

Due to the resiliency oi the segments l, and the tapered formation of the neck i, it will he obvious that the can can be disposed on the neck, by applying slight pressure to the cap, as the pres- 2% sure will cause the studs 8 to ride over the neck until they fall in the grooves; therefore the cap can he applied instantly and merely by a snap action. The cap can likewise he removed very -exrmditiously in that slight rotation will cause 30 the studs 8 to ride up into the inclined portions 3 which due to the cam action thereof on the studs will move the segments outwardly and thereby release the cap.

The annular space between the s t and the 35 projection 9 at their juncture with the undersurface of the top H, forms a seat for a gasket. as shown, and which oi course provides a leak proof connection between the cap and the neck of the tuhe.

it is thought from the foregoing description that the advantages and novel ieatures of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the comhina- 45 tion and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What i claim. is:

l. A closure for a collapsible tube having a neck provided with a plurality of grooves arranged about the circumference thereof, said grooves having horizontal portions and upwardly in clined cammed portions merging into the neck at their upper ends and communicating at their lower ends with the horizontal portions, a, cap including a top. a. skirt depending from the top and slotted vertically to provide a plurality of yieldable segments, studs secured to and extending inwardly from the segments and adapted to ride over the neck upon movement of the segments to snap into the grooves in applying the cap to the neck and holding the same thereon, and said cap being rotated to pass the studs through the grooves and the cammed portions and to the upper ends of the latter in removing the cap from the neck.

2. A closure for a collapsible tube having a. tapered neck provided with circumferentially arranged grooves, each-groove having a horirontal portion and an upwardly inclined cammed portion communicating therewith at their lower ends and merging into the neck at their upper ends, a cap including a. top, a. skirt formed on and depending from the top and shaped to follow the taper of the neck, said skirt being slotted to provide yieldable segments, a stud extending inwardly from each segment and adapted to ride over the neck when the cap is pressed thereon and to be received in said grooves in applying and holding the cap on the neck, and said studs adapted to pass through the grooves and the cammed portions to the upper ends of the latter in removing the cap from the neck.

WILLIAM SIMPSON. 

